Firstly, I'd worry about that lump. Sometimes vaccinations and biopsies sometimes can cause scarring that can actually lead to cancerous growths. Considering you were doing a biopsy for a cancer, it's possible it caused an acceleration of a pre-existing cancer.
The only alternate I can think of is a black/bloodroot salve. This is a homeopathic medication. Having no experience with it, I can't speak for it's efficacy. But it is cheaper, coming in at around forty dollars.